Massey-Harris GP tractor specifications

1930 - 1936

1930 - 1936 Four-wheel Drive (4WD) tractor

Production

Production Manufacturer:Massey-Harris
Type:Four-wheel Drive (4WD) tractor
Factory:Racine, Wisconsin, USA
Total built:3,000
Original price:$1,000
The Massey-Harris 15/22 GP General Purpose tractor was the first Massey-Harris designed tractor.

Massey-Harris GP Power

Massey-Harris GP Power Drawbar (claimed):15 hp
11.2 kW
Belt (claimed):22 hp
16.4 kW
Plows:2 (14-inch)
Drawbar (tested):19.91 hp
14.8 kW
Belt (tested):24.84 hp
18.5 kW
power test details ...

1930 - 1936

Four-wheel Drive (4WD) tractor

Nebraska Tractor Test 177

Nebraska Tractor Test 177
Gasoline 3-speed 4WD May 5 - 27, 1930 Link: Nebraska Tractor Test 177 file
Belt power (max):	24.84 hp 18.5 kW
Belt fuel use (max):	3.0 gal/hour 11.4 l/hour
Drawbar performance
Max power:	19.91 hp 14.8 kW
Gear 1 used for power test.
Max pull:	3,247 lbs 1472 kg
Gear 1 used for pull test.

Nebraska Tractor Test 191

Nebraska Tractor Test 191
Distillate 3-speed 4WD May 22 - June 12, 1931 Link: Nebraska Tractor Test 191 file
Belt power (max):	22.50 hp 16.8 kW
Belt fuel use (max):	2.9 gal/hour 11.0 l/hour
Drawbar performance
Max power:	16.79 hp 12.5 kW
Gear 2 used for power test.
Max pull:	2,764 lbs 1253 kg
Gear 1 used for pull test.

Massey-Harris GP Engine

Massey-Harris GP Engine Hercules 3.7L 4-cyl gasoline Fuel tank:14 gal
53.0 L
Aux. fuel:1.6 gal
6.1 L
Engine details ...

1930 - 1936

Four-wheel Drive (4WD) tractor

Engine Detail

Engine Detail
Hercules OOC
gasoline
4-cylinder
liquid-cooled vertical L-head
Displacement:	226 ci 3.7 L
Bore/Stroke:	4.00x4.50 inches 102 x 114 mm
Air cleaner:	oil bath
Rated RPM:	1200
Coolant capacity:	16 qts 15.1 L

Engine Detail

Engine Detail
Hercules OHC
gasoline
4-cylinder
liquid-cooled
The overhead-valve (OHV) Hercules engine replaced the flathead OOC in 1936, the final year of the GP production.
Displacement:	226 ci 3.7 L
Bore/Stroke:	4.00x4.50 inches 102 x 114 mm
Rated RPM:	1200

Mechanical

Mechanical Chassis:4x4 4WD
Cab:Open operator station.
Transmission:3-speed gear
Transmission details ...

1930 - 1936

Four-wheel Drive (4WD) tractor

Transmission

Transmission
Type:	gear
Gears:	3 forward and 1 reverse

Speeds

Speeds

Dimensions & Tires

Dimensions & Tires Weight:3,900 lbs
1769 kg
Front tire:38x8
Rear tire:38x8
Full dimensions and tires ...

1930 - 1936

Four-wheel Drive (4WD) tractor

Massey-Harris GP Tires

Massey-Harris GP Tires
Ag front:	38x8 steel
Ag rear:	38x8 steel

Dimensions

Dimensions
Length:	119 inches 302 cm
Height:	55 inches 139 cm
Weight:	3,900 lbs 1769 kg
Ground clearance:	30 inches 76 cm
Front tread:	40 to inches 101 to 0 cm
Front tread:	60 to inches 152 to 0 cm
Front tread:	66 to inches 167 to 0 cm
Front tread:	76 to inches 193 to 0 cm
Rear tread:	40 to inches 101 to 0 cm
Rear tread:	60 to inches 152 to 0 cm
Rear tread:	66 to inches 167 to 0 cm
Rear tread:	76 to inches 193 to 0 cm